ptolemy.data.expr

Class ExplicitScope

java.lang.Object

ptolemy.data.expr.ExplicitScope

All Implemented Interfaces:

ParserScope

public class ExplicitScope
extends java.lang.Object
implements ParserScope

An implementation of ParserScope that includes an explicit list of Variables in the scope.

Since:

Ptolemy II 2.1

Version:

$Id$

Author:

Steve Neuendorffer

Pt.AcceptedRating:

Red (liuxj)

Pt.ProposedRating:

Red (liuxj)

Constructor Summary

Constructors

Constructor and Description
ExplicitScope(NamedList list) Construct a new scope that includes the objects in the given list, which must contain only variables.

Method Summary

Modifier and Type	Method and Description
Token	get(java.lang.String name) Look up and return the value with the specified name in the scope.
Type	getType(java.lang.String name) Look up and return the type of the value with the specified name in the scope.
InequalityTerm	getTypeTerm(java.lang.String name) Look up and return the type term for the specified name in the scope.
java.util.Set	identifierSet() Return the list of variables within the scope.
NamedList	variableList() Return the list of variables in this scope.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ExplicitScope

public ExplicitScope(NamedList list)

Construct a new scope that includes the objects in the given list, which must contain only variables.

Parameters:

list - The list of variables for the scope.

Method Detail

get

public Token get(java.lang.String name)
          throws IllegalActionException

Look up and return the value with the specified name in the scope. Return null if the name is not defined in this scope.

Specified by:

get in interface ParserScope

Parameters:

name - The name of the variable to be looked up.

Returns:

The token associated with the given name in the scope.

Throws:

IllegalActionException - If a value in the scope exists with the given name, but cannot be evaluated.

getType

public Type getType(java.lang.String name)
             throws IllegalActionException

Look up and return the type of the value with the specified name in the scope. Return null if the name is not defined in this scope.

Specified by:

getType in interface ParserScope

Parameters:

name - The name of the variable to be looked up.

Returns:

The token associated with the given name in the scope.

Throws:

IllegalActionException - If a value in the scope exists with the given name, but cannot be evaluated.

getTypeTerm

public InequalityTerm getTypeTerm(java.lang.String name)
                           throws IllegalActionException

Look up and return the type term for the specified name in the scope. Return null if the name is not defined in this scope, or is a constant type.

Specified by:

getTypeTerm in interface ParserScope

Parameters:

name - The name of the variable to be looked up.

Returns:

The InequalityTerm associated with the given name in the scope.

Throws:

IllegalActionException - If a value in the scope exists with the given name, but cannot be evaluated.

identifierSet

public java.util.Set identifierSet()

Return the list of variables within the scope.

Specified by:

identifierSet in interface ParserScope

Returns:

The list of variables within the scope.

variableList

public NamedList variableList()

Return the list of variables in this scope.

Returns:

The list of variables in this scope.